. >>> president obama is urging americans to speak up to authorities if they see something suspicious. the president made that statement at the white house just a foul minutes ago. a day after the boston marathon bombing. also minutes ago the fbi told us that the death toll remains at lee. one of those victims is an 8-year-old boy. no one is claiming responsibility for the attack. we are noticing the impact of the bombing in our area as well. we saw tighter security today at reagan national. northern virginia bureau chief julie carey tells us tighter security will be in place through the end at -- at least through the end of the day. >>> a moment of silence this morning on wall street for the boston marathon bombing victims. let's check in with cnbc's bertha coombs. bertha, good morning. >> good morning. it is one of those things we see all too often. had just stopped to honor the bombing victims. a lot of folks yesterday watching that unfold. and continuing to monitor the developments. markets are rebounding this morning. the dow is back up triple digits after yesterday's massive sel